PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-11:12:50
G01     307.4          33.8                6.1 +/-    0.91      10.0 +/-    0.91  0.090 / 0.100
G10     105.8          39.1                6.7 +/-    0.55       9.8 +/-    0.55  0.080 / 0.090
G11     281.0          28.1                6.6 +/-    2.04      12.1 +/-    2.04  0.050 / 0.050
G14     358.1          67.0                6.4 +/-    0.74       6.8 +/-    0.74  0.050 / 0.040
G18     274.6          51.0                7.2 +/-    0.67       8.9 +/-    0.67  0.040 / 0.040
G20     120.4          14.1                4.0 +/-    1.85      10.3 +/-    1.85  0.040 / 0.050
G22     311.1          30.6                8.2 +/-    0.79      14.1 +/-    0.79  0.090 / 0.120
G25     81.7           15.9                2.2 +/-    2.13       5.3 +/-    2.13  0.100 / 0.120
G31     168.4          63.7                7.4 +/-    0.32       8.2 +/-    0.32  0.040 / 0.060
G32     28.6           57.2                6.0 +/-    1.13       7.0 +/-    1.13  0.040 / 0.050